千岛湖的渔业资源现状及资源增殖途径探讨

Present Situation of Fishery Resources in the Thousand—Island Lake and Discussion on the Way of Their Reproduction

千岛湖(新安江水库)位于浙西地区,是1959年蓄水的特大人工湖,面积有575平方公里。渔业经营30余年来,鱼产量出现了由高到低,再由低向高稳步上升的发展趋势。作者通过大量的调查资料阐明了产量变化的原因,并提出了促进资源增殖的五条具体措施。总的设想是:稳定鲢鳙鱼的产量;促使鲤鲫鱼、鲴鱼和鳜鱼的产量比例上升;在库湾发展网箱养鱼,着重开展高品位鱼类(如鳗鱼等)的养殖;开展经常性的渔业资源调研工作;加强渔政管理。

the Thousand—Island Lake (Xinan jiang Reservoir )is situated on the west region of Zhejiang Province. It was a huge artificial lake, area of 575(km^2) ,for storing up water built in 1959. Over thirty years of management of fisheries ,the fish yield which once droped hasincreased thereafter st(?)dil The authors explained the reason of the yield changing by a lot of investigation data. and suggested 5 con(?)te ways to improve the fishery resources enhancement. The general tenta(?)e ideas were to keep the yield of silver carp Hypophthalmichthys molitrix and bighead Aristichthys nohilis; to improve yield rate of common carp Cyprinus carpio, crucian carp Carassius auratus, Xenocypris davidi and mandarin fish Siniperca chuatsi; to develop the cage culture which mainly rear the valuable fishes(for'example, Anguilla japonica etc. )in the bay fo reservoir;to carry on the frequent investigation of fishery resources and to strengthen the fisheries management.